About Reykur

Finding the smoke
before the fire.

Reykur is building the future of proactive security, helping organizations identify architectural threats before they become costly vulnerabilities.

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Founded2026
HeadquartersZürich, CH
StageAlpha
EntityReykur AG
Our Story

A Swiss security company
built for modern architecture.

Reykur AG is a Swiss cybersecurity company based in Zürich, building an automated, continuous threat modeling platform.

By connecting to a team's existing workflow artifacts (tickets, design documents, infrastructure-as-code configurations, and code repositories), Reykur automatically maps data flows, identifies threats, and tracks security controls as systems evolve.

The platform addresses a critical gap in the software development lifecycle. Architectural and design-level flaws account for the majority of vulnerabilities, and they cost dramatically more to remediate the later they are caught.

01For Security Teams

Portfolio-wide risk visibility

A unified, continuously-updated view of architectural risk across every product and service in your portfolio.

02For Developers

Ship faster, with fewer security blockers

Threat models that update themselves as the system evolves, so security review stops being a release-time bottleneck.

30×
Cost Differential

Design-stage flaws cost up to 30× more to remediate once they reach production.

Where we are

The road so far

2025

First conversations

Founders connect through the Swiss DEF CON community.

2026 · Q1

Reykur AG founded

Swiss entity established in Canton of Zürich.

2026 · Q2

Closed alpha

Early design partners onboarded. You are here.

2026 · Q3

Public launch

General availability for security teams and developers.

Reykur/ˈreɪ.kʏr/ · Icelandic for “smoke”

The Meaning Behind Our Name

In Icelandic, “reykur” means smoke. Just as smoke signals the presence of fire before flames become visible, Reykur helps organizations detect the early warning signs of security threats before they escalate into serious incidents.

We help you find the smoke before the fire.

Ethos

The principles we build on

01

Radical Transparency

We deliver the uncomfortable truth. Security cannot work without clarity. Attackers already know, so it’s time you did too.

HonestyClarityNo theatre
02

Architectural Integrity

Security is a design problem, not a patch problem. We build for the architecture, not just the software stack on top of it.

Design-firstSystems thinking
03

Proactive Vigilance

The smoke is our signal. We operate at the edge of emerging threats, never waiting for the threat to evolve into an incident.

Early signalContinuous
Acknowledgments

Gratitude & community

The International Beer Bar

A Place We Call Home

Much of the early work on Reykur took place within the walls of The International beer bar in Zurich. The staff and regulars have been incredibly supportive throughout our journey, providing not just excellent hospitality but genuine encouragement as this vision took shape.

We are grateful for the community that welcomed us and the conversations that helped refine our thinking. Some of the best ideas emerge in unexpected places.

In loving memory of Andy, whose warmth and spirit will always be part of this story.

DC4131 · DEF CON Switzerland

DC4131

The Swiss DEF CON chapter is where the Reykur team first connected. The Swiss security community has been an invaluable source of collaboration, feedback, and support as we developed our vision for modern threat modeling.

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